Only getting 285k from each sapphire 7950

[black3000gt]

Hi guys. I am setup and have been mining bit coins and lite coins. I am having trouble getting my hash rate up where it should be. Each card is getting 285k. I believe i should be getting close to 500k per card. I am using the stock settings for the card and newest build of cgminer. Any advise would be great. Thanks.

[black3000gt]

any ideas???

[pantehicon]

What settings are you running for cgminer?  e.g. Intensity. What's your base clock?

Try running with -I 9 for a start and see if that makes any difference. If it does, type 'G' (gpu settings) 'I' (change intensity) and you can tweak it on the fly. Anything from about 9 to 20 might work for you.

[zeryl]

Here are my current settings for the Sapphire 7950 Vapor-X, I have it all in a batch file I run when I need:

setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
cgminer.exe --scrypt -o stratum+tcp://eu.wemineltc.com:3333 -u x -p x -I 20 -w 256 -g 1 --gpu-engine 900-1000 --gpu-memclock 1450 --gpu-fan 85 --auto-gpu --thread-concurrency 16384


This is getting me about 620KH/s, and haven't had a driver crash since setting it up.